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MathLink Help


Dear Math Group
  I try connect to Mathmatica using MathLink in Visual C++.
  When I try execute D[x^2 *Sin[x],x]
 
I write
 
MLPutFunction(lp, "EvaluatePacket", 1);
     MLPutFunction(lp, "ToString", 1);
        MLPutFunction (lp, "ToExpression", 1);
        MLPutString(lp, "D[x^2 *Sin[x],x]");
MLEndPacket(lp);
 
I receive 
 
   2\012x  Cos[x] + 2 x Sin[x]
 
My question 
  How I understant the result
 
Thank you for help




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